Income Taxes (Narrative) (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 02, 2015	Oct. 03, 2014	Oct. 02, 2015	Oct. 03, 2014	Jan. 02, 2015
Income Tax Contingency [Line Items]
Effective income tax rate	15.00%	(66.00%)	22.00%	19.00%
Statutory federal income tax rate			35.00%	35.00%
Unrecognized tax benefits that would impact effective tax rate	$ 45,800,000		$ 45,800,000		$ 45,600,000
Unrecognized tax benefit liabilities include interest and penalties	5,400,000		5,400,000		$ 4,700,000
Tax Year 2010 and 2011 [Member] | Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Proposed Adjustments on Income Tax Assessments			67,000,000
Income Tax Examination, Penalties and Interest Expense			$ 0
Recreational Data Services Inc. [Member]
Income Tax Contingency [Line Items]
Discrete Tax Benefit	$ 51,300,000